钻探工程2024，Vol.51Issue(z1)：348-351,4.DOI:10.12143/j.ztgc.2024.S1.055
泡碱处理粘卡在皖亳地1井的应用
Application of alkali treatment for sticking in Well WBD-1
摘要
Abstract
When the drill string is pressed against the wellbore due to poor mud cake quality,it is prone to sticking under the pressure difference between the drilling fluid column pressure and the formation pressure,which poses a challenge to subsequent drilling construction.In this paper,the mechanism of releasing filter cake in low solid drilling fluid system based on bentonite is analyzed,and the dissolution of filter cake in different concentrations of sodium hydroxide solution is discussed through experiments.The results show that the combination of OH-with Ca2+and Mg2+increases with time and the 6%sodium hydroxide solution has the better effect on filter cake under the same condition.The application in Well WBD-1 shows that compared with acid soaking and oil soaking,the treatment time of foam alkali is faster,which can avoid larger downhole complexity,reduce the interference to the subsequent drilling fluid and save the drilling cost.The results have a reference value for the similar sticking processing.关键词
粘附卡钻/井壁失稳/火碱解卡剂/解卡/皖亳地1井/油气地质调查Key words
sticking/wellbore instability/pyroalkali pipe-freeing agent/sticking release/Well WBD-1/oil and gas geological survey分类
地质学引用本文复制引用
赵洪波,齐治虎,岳伟民,蔡正水..泡碱处理粘卡在皖亳地1井的应用[J].钻探工程,2024,51(z1):348-351,4.基金项目
中国地质调查局地质调查项目(编号:DD20230262) （编号:DD20230262）
中国地质调查局油气资源调查中心英才培养项目(编号:油科创[2023]-YC03号) （编号:油科创[2023]-YC03号）
